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linux/sound/hda/controllers/acpi.c

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ALSA: hda - Add new driver for HDA controllers listed via ACPI Some systems expose HD-Audio controllers via objects in the ACPI tables which encapsulate the controller's interrupt and the base address for the HDA registers in an ACPI _CRS object, for example, as listed in this ACPI table dump excerpt: Device (HDA0) { Name (_HID, "NVDA2014") // _HID: Hardware ID ... Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { Memory32Fixed (ReadWrite, 0x36078000, // Address Base 0x00008000, // Address Length ) Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x0000021E, } }) } Add support for HDA controllers discovered through ACPI, including support for some platforms which expose such HDA controllers on NVIDIA SoCs. This is done with a new driver which uses existing infrastructure for extracting resource information from _CRS objects and plumbs the parsed resource information through to the existing HDA infrastructure to enable HD-Audio functionality on such devices. Although this driver is in the sound/pci/hda/ directory, it targets devices which are not actually enumerated on the PCI bus. This is because it depends upon the Intel "Azalia" infrastructure which has traditionally been usedvfor PCI-based devices. Signed-off-by: Daniel Dadap <ddadap@nvidia.com> Link: https://patch.msgid.link/aC3ksXJUM9DlKiz6@ddadap-lakeline.nvidia.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-05-21 09:35:29 -05:00
ALSA: hda: acpi: Use SYSTEM_SLEEP_PM_OPS() The dev_pm_ops definition must be SYSTEM_SLEEP_PM_OPS() instead of SET_SYSTEM_SLEEP_PM_OPS(); otherwise it leads compile warnings without CONFIG_PM_SLEEP. The latest patch version I took was back to an old macro (likely mistakenly), and I overlooked it at applying. Fix it now. Fixes: 4b214c9bbe26 ("ALSA: hda - Add new driver for HDA controllers listed via ACPI") Reported-by: Randy Dunlap <rdunlap@infradead.org> Closes: https://lore.kernel.org/20250522203020.1478369-1-rdunlap@infradead.org Link: https://patch.msgid.link/20250522204624.1757-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-05-22 22:46:23 +02:00
ALSA: hda - Add new driver for HDA controllers listed via ACPI Some systems expose HD-Audio controllers via objects in the ACPI tables which encapsulate the controller's interrupt and the base address for the HDA registers in an ACPI _CRS object, for example, as listed in this ACPI table dump excerpt: Device (HDA0) { Name (_HID, "NVDA2014") // _HID: Hardware ID ... Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { Memory32Fixed (ReadWrite, 0x36078000, // Address Base 0x00008000, // Address Length ) Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x0000021E, } }) } Add support for HDA controllers discovered through ACPI, including support for some platforms which expose such HDA controllers on NVIDIA SoCs. This is done with a new driver which uses existing infrastructure for extracting resource information from _CRS objects and plumbs the parsed resource information through to the existing HDA infrastructure to enable HD-Audio functionality on such devices. Although this driver is in the sound/pci/hda/ directory, it targets devices which are not actually enumerated on the PCI bus. This is because it depends upon the Intel "Azalia" infrastructure which has traditionally been usedvfor PCI-based devices. Signed-off-by: Daniel Dadap <ddadap@nvidia.com> Link: https://patch.msgid.link/aC3ksXJUM9DlKiz6@ddadap-lakeline.nvidia.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-05-21 09:35:29 -05:00
ALSA: hda: acpi: Make driver's match data const static The driver's match data, nvidia_hda_data, is referred only locally, and should be static. Also, as it's a read-only data, it can be gracefully const, too. Fixes: 4b214c9bbe26 ("ALSA: hda - Add new driver for HDA controllers listed via ACPI") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202505230426.k8ruTgnr-lkp@intel.com/ Link: https://patch.msgid.link/20250522205252.4056-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-05-22 22:52:51 +02:00
ALSA: hda - Add new driver for HDA controllers listed via ACPI Some systems expose HD-Audio controllers via objects in the ACPI tables which encapsulate the controller's interrupt and the base address for the HDA registers in an ACPI _CRS object, for example, as listed in this ACPI table dump excerpt: Device (HDA0) { Name (_HID, "NVDA2014") // _HID: Hardware ID ... Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { Memory32Fixed (ReadWrite, 0x36078000, // Address Base 0x00008000, // Address Length ) Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x0000021E, } }) } Add support for HDA controllers discovered through ACPI, including support for some platforms which expose such HDA controllers on NVIDIA SoCs. This is done with a new driver which uses existing infrastructure for extracting resource information from _CRS objects and plumbs the parsed resource information through to the existing HDA infrastructure to enable HD-Audio functionality on such devices. Although this driver is in the sound/pci/hda/ directory, it targets devices which are not actually enumerated on the PCI bus. This is because it depends upon the Intel "Azalia" infrastructure which has traditionally been usedvfor PCI-based devices. Signed-off-by: Daniel Dadap <ddadap@nvidia.com> Link: https://patch.msgid.link/aC3ksXJUM9DlKiz6@ddadap-lakeline.nvidia.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-05-21 09:35:29 -05:00